名词
中文翻译：大炮
同义词：
['gunpowder', 'artillery', 'cannon例句：1. The fortress was built to protect the city from enemy cannon.（这座堡垒是为了保护城市免受敌军火炮的袭击而建造的。）']
例句：
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1. The fortress was built to protect the city from enemy cannon.
这座堡垒是为了保护城市免受敌军火炮的袭击而建造的。
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2.The artillery team is responsible for launching cannons during battles.
炮兵队负责在战斗中发射火炮。
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3. Cannons are used in warfare to fire projectiles at enemies.
火炮用于战争中向敌人发射投射物。